# US 8,782,802 B2 · Method and system for providing a REL token > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,802 B2 - Document ID: US8782802B2 - Status: Granted - Kind: B2 - Application number: 12/594,331 - Filed: 2008-04-02 - Published: 2010-04-08 - Granted: 2014-07-15 - Earliest claimed: 2007-04-03 - Assignees: Siemens Aktiengesellschaft - Applicants: Murugaraj Shanmugam; Hannes Tschofenig - Inventors: Murugaraj Shanmugam; Hannes Tschofenig - Web page: https://patentgrep.com/patent/US8782802B2 ## CPC - H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)} - H04L 51/00: User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail - H04L 2463/101: applying security measures for digital rights management - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The embodiments relate to a method for providing at least one REL (Rights Expression Language) token, the REL-token or tokens being provided in a message by a MIME (Multipurpose Internet Mail Extension) protocol. ## Claims ### Claim 1 A method for providing at least one Rights Expression Language (REL) token and providing coded application data, comprising: transmitting coded application data having a license key from the server to the terminal: transmitting the license key, separate from the coded application data, as the Rights Expression Language (REL) token from the server to the terminal via a Multipurpose Internet Mail Extension (MIME) protocol: and decoding, by the terminal, the coded application data based on the REL token, wherein the message with the REL token is transferred by means of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the REL token is provided in an email by means of the MIME protocol. ### Claim 3 (depends on 2) The method as claimed in claim 2, wherein the REL token is provided by the server, after the terminal has requested the REL token from the server. ### Claim 4 A method for providing at least one Rights Expression Language (REL) token, comprising providing the at least one REL token in a message via a Multipurpose Internet Mail Extension (MIME) protocol from a server to a terminal, wherein the message with the REL token is provided in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 5 A method for providing at least one Rights Expression Language (REL) token AND downloading application data, comprising: transmitting, by a terminal, at least one Rights Expression Language (REL) token to a server via a Multipurpose Internet Mail Extension (MIME) protocol, and releasing, separate from the REL token transmitting, by the server the application data for the terminal as a function of the REL token, wherein a message with the REL token is transferred by means of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 6 A terminal, comprising: a receiver receiving messages according to a Multipurpose Internet Mail Extension (MIME) protocol and extracting a Rights Expression Language (REL) token from one of the messages; a decoder decrypting received encrypted application data based on the extracted REL token; and a data processor processing the decrypted application data, wherein the message with the REL token is received in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 7 A terminal, comprising: a storage unit storing at least one Rights Expression Language (REL) token; and an output facility sending the REL token via a message according to a Multipurpose Internet Mail Extension (MIME) protocol, wherein the message with the REL token is provided in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 8 A server, comprising: a database providing encrypted application data; a key management storage providing at least one Rights Expression Language (REL) token with a license key for decrypting the encrypted application data; and an output facility sending the encrypted application data and sending the REL token via a Multipurpose Internet Mail Extension (MIME) protocol, wherein the message with the REL token is provided in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 9 (depends on 8) The server as claimed in claim 8, further comprising a receiver receiving the REL token via a message according to a Multipurpose Internet Mail Extension (MIME) protocol. ### Claim 10 A system, comprising: at least one terminal; and at least one server, and wherein the terminal and/or the server has an output facility for sending a Rights Expression Language (REL) token via a message according to a Multipurpose Internet Mail Extension (MIME) protocol, wherein the message with the REL token is provided in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token. ### Claim 11 A non-transitory computer readable data medium with stored program commands for executing a method of providing at least one Rights Expression Language (REL) token in a message via a Multipurpose Internet Mail Extension (MIME) protocol from a server to a terminal, wherein the message with the REL token is provided in an INVITE request of a Session Initiation Protocol (SIP) protocol, wherein the REL token is a machine-processable expression of data status that creates a protocol specifying a form of a license key where the license key is embedded in the REL token.